From the back of the box:
Étienne d'Ambreville, the most powerful wizard in all Glantri, is missing and presumed dead. There are some who would like to keep that way. Only by entering the dreams of a dying Immortal can player characters discover the truth. Meanwhile, a sinister killer stalks the d'Ambreville family, murdering them one by one. Can the heroes identify the killer and solve the mystery before it's too late? A sequel to the popular adventure Castle Amber (Chateau d'Amberville), this story is set thirty years after the original adventure.
Mark of Amber is an interactive audio CD adventure with digitally recorded sound tracks. The compact disc features sounds your heroes would actually hear as they meet and interact with the d'Ambrevilles, and it includes three instrumental themes as well.
Contents:
Audio CD in jewel case
Poster-size player's map of the chateau
64-page Adventure Book
8 parchment sheets for players and DM
For 2 to 8 heroes of levels 4 to 6.